Carboxylic Acids and their Derivatives

Simple Carboxylic Acids Rule C-405

405.1 - When hydroxyl has been removed from one or more, but not from all, the carboxyl groups present in an acid, the name of the radical is formed by denoting the carboxyl groups by prefixes "carboxy-" and the carbonyl group by the suffix "-oyl" or "-carbonyl''.

Examples to Rule C-405.1

405.2 - The following names of radicals are retained (see also Rule C-416.3 and, for amino-acyl radicals, Rule C-421):

See Recommendations'93 R-5.7.1

Hydroxy, Alkoxy and Oxo Acids Rule C-411, Rule C-415, Rule C-416
Amino Acids Rule C-421
Amic acids Rule C-431
Peroxy Acids Rule C-441
Imidic, Hydrazonic, and Hydroxamic Acids Rule C-451
Salts and Esters Rule C-461, Rule C-462, Rule C-463, Rule C-464
Lactones, Lactides, Lactams, and Lactims Rule C-471, Rule C-472, Rule C-473, Rule C-474, Rule C-475
Acyl Halides Rule C-481
Acid Anhydrides Rule C-491


This HTML reproduction of Sections A, B and C of IUPAC "Blue Book" is as close as possible to the published version [see Nomenclature of Organic Chemistry, Sections A, B, C, D, E, F, and H, Pergamon Press, Oxford, 1979. Copyright 1979 IUPAC.] If you need to cite these rules please quote this reference as their source.

Published with permission of the IUPAC by Advanced Chemistry Development, Inc.,, +1(416)368-3435 tel, +1(416)368-5596 fax. For comments or suggestions please contact